As far as I have been able to research, this was the first television report anywhere that the World Trade Center had been hit by an aircraft, and that WNYW reported this at 8:48
A.M. Eastern Daylight Time. Note that they broke into a commercial to report this news.
At the same time (maybe a few seconds earlier?), WCBS Radio had the first news on radio of the first plane crashing into the World Trade Center. It too was at 8:48
A.M. EDT, and came during a regularly-scheduled traffic report, reported by longtime WCBS traffic copter reporter Tom Kaninsky from the station's helicopter.
I am giving this clip five stars due to its historical value, since this is likely the first TV report (or maybe even the first broadcast report) of that awful attack.
It certainly beat the TV networks by three or four minutes.